Filter to add custom price for tour extras.

Source

File: /core/lib/cart.php
Used by: /core/lib/cart.php, /inc/cart/class-cart.php

Parameters
$price, $e_id, $trip[‘trip_id’]

Example:

function prefix_wp_travel_trip_extras_custom_prices( $price, $e_id, $trip_id ) {
    $price = 200;
    return $price;
}
add_filter( 'wp_travel_trip_extras_custom_prices', 'prefix_wp_travel_trip_extras_custom_prices', 12, 3 );